Average SREADTIM and MREADTIM for SAN storage

Hi,

Runnning a system statistics on the oracle 10.2 RAC cluster with SAN storage gives me the results below. The block size is 8192 and the multiblock read count is 32 , what i would like to know is if sreadtime of 11 ms and mreadtim of 20 ms are acceptable numbers.

Thanks

PNAME                          PVAL1
------------------------------ ----------------------
CPUSPEEDNW                     1139.96075866579
IOSEEKTIM                      10
IOTFRSPEED                     4096
SREADTIM                       11.522
MREADTIM                       20.741
CPUSPEED                       1280
MBRC                           186
MAXTHR                         36916224
SLAVETHR                       676864